Photo of the day

Will Gadd completes his ascent of Helmcken Falls. This is from Edge of the Unknown with Jimmy Chin.

King penguin. This is from A Penguin's Life.

The taiga forest is the largest biome in the world. Spread over Eurasia and North America, it occupies around 17% of the Earth"s land surface. This is from Siberia's Wild Year.

A group of adult emperor penguins stand together on the ice in Cape Washington, Antarctica. This is from A Penguin's Life.

The Blackiston's fish owl hunts cherry salmon during their upstream migration to spawn. This is from Siberia's Wild Year.

Paddling to escape a crocodile attack, Chris Korbulic turns to see Hendri Coetzee's overturned kayak. This is from Edge of the Unknown with Jimmy Chin.

An adult emperor penguins walks across the ice in Cape Washington, Antarctica. This is from A Penguin's Life.

In spring, reindeer migrate from the forests to the tundra, which transforms into a vast meadow when the snow melts.This is from Siberia's Wild Year.

A researcher lies on the ice and observes an adult emperor penguin in Cape Washington, Antarctica This is from A Penguin's Life.

Big Mountain Snowboarder Travis Rice stands in the snow wearing his snowboarding gear. This is from Edge of the Unknown with Jimmy Chin.

Pacific walruses migrate north during spring and as many as 20,000 haul out along Siberia's coast. This is from Siberia's Wild Year.

A group of adult emperor penguins stand together while one stretches its wings in Cape Washington, Antarctica. This is from A Penguin's Life.

Travis Rice's home in Jackson, Wyoming. This is from Edge of the Unknown with Jimmy Chin.

Red crowned cranes pair for life and each spring they renew their bond by performing a courtship dance. This is from Siberia's Wild Year.

An aerial view of the waterhole. This is from Africa's Deadliest: Deadly Waters.

Travis Rice jumps as he snowboards on a mountain in Alaska. This is from Edge of the Unknown with Jimmy Chin.

A big cat, portrayed. This is from Africa's Deadliest: Deadly Waters.

Point of view of Travis Rice as he snowboards on a mountain in Alaska. This is from Edge of the Unknown with Jimmy Chin.

A fish eagle looks for prey. This is from Africa's Deadliest: Deadly Waters.

Travis Rice point of view with special effects as he prepares to squeeze through two rocks with his snowboard on an Alaskan mountain.This is from Edge of the Unknown with Jimmy Chin.

REENACTMENT - Investigators hypothesize that a lengthy taxi with an open door may have increased the amount of carbon monoxide entering the cabin of the Sydney Seaplanes DHC-2. This is from Air Crash Investigation.

A baboon drinks water. This is from Africa's Deadliest: Deadly Waters.

One of Spark's vehicles inside of the garage. This is from Underworld,Inc.

A portrait of a jackal. This is from Africa's Deadliest: Deadly Waters.

REENACTMENT - Twenty-six months after the crash of the Sydney Seaplanes DHC-2, investigators discover that the pilot and passengers had high levels of carbon monoxide in their blood. This is from Air Crash Investigation.

Orion the nyala yawning. This is from Secrets of the Zoo: Tampa.

REENACTMENT - While sifting through the mud that filled the cabin of the Sydney Seaplanes DHC-2, investigators discover a crucial piece of evidence: a camera belonging to one of the passengers onboard. This is from Air Crash Investigation.

Bellissima and her manatee friends hanging out together on habitat. This is from Secrets of the Zoo: Tampa.

A group of adult emperor penguins stand together on the ice in Cape Washington, Antarctica. This is from A Penguin's Life.

Sunny the nyala enjoying her time on habitat before she leaves for another zoo. This is from Secrets of the Zoo: Tampa.